JVC 250 Service Manual page 52

8. Loosen the two hex bolts (see Figure 4-10) on the ILA
of the Relay Lens.
9. Slide the Relay ILA
the sharpest spacer ball focus.
NOTE: Do not use the projection lens focus while performing this step.
10. Tighten the hex bolts on the Green ILA
the Green Relay Lens.
11. Repeat Steps 7-10 above for other colors that need ILA
Be sure to hide the other two colors.
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ILA Remove and Replace
Each projector has three ILA
Tools Needed
4-mm Hex wrench
Parts Needed
Super Contrast
Blue 102630-14
Green 102630-15
Red 102630-16
NOTE: Do not interchange Super Contrast ILA
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ILA s are color specific and can not be interchanged i.e. the green ILA
be put in the red channel or blue channel.
To Remove the ILA
1. It is not necessary to power off the projector.
2. Remove the Rear cover. It is not necessary to tilt the Electronics Module
up.
3. Loosen the two Hex nuts using a 4-mm Hex nut wrench and slide the
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ILA /Relay Lens/CRT Assembly back.
Loosen the two wing nuts on the ILA
4.
Disconnect the connector from the ILA
5.
(it will slide out with some resistance).
It will be necessary to reset ILA
setting, and shading for the ILA
Model 250 Service Manual
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/Lens/CRT assembly forward or backward to achieve
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s; each located on the front of a Relay Lens.
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bias, and Overlap. ILA
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being replaced should be checked.
Chapter 4---Optical
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assembly in front
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Assembly and the wing nut on
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Back Focusing.
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s. The Compensators on the
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and pull back the spring clip.
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and remove the ILA
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Compensator, G
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can not
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assembly
2
4-19